Association fiber

From Wikipedia, the free encyclopedia

Jump to navigationJump to search

Association fiber

"Association Fibers" by?TavorLab

?

?

Diagram showing principal systems of association fibers in the?cerebrum.

?

Dissection of?cerebral cortex?and?brainstemshowing association fibers and?insular cortexafter removal of its superficial?grey matter

Details

Identifiers

Latin

Fibrae associationis telencephali

TA98

A14.1.00.016
A14.1.09.553

TA2

5593

FMA

75241

Anatomical terms of neuroanatomy

[edit on Wikidata]

Association fibers?are?axons?that connect?cortical areas?within the same?cerebral hemisphere.[1]

In human neuroanatomy,?axons?(nerve fibers) within the brain, can be categorized on the basis of their course and connections as association fibers,?projection fibers, and?commissural fibers.[1]

The association fibers unite different parts of the same?cerebral hemisphere, and are of two kinds: (1) short association fibers?that connect adjacent gyri;?

（其實short fibers連接的就是相鄰的Brodmann皮層分區(qū)，這樣說才更明確。）

(2) long association fibers?that make connections between more distant parts.

Contents

·?1Short association fibers

·?2Long association fibers

·?3See also

·?4References

·?5External links

Short association fibers[edit]

Many of the short association fibers (also called arcuate or "U"-fibers) lie immediately beneath the gray substance of the cortex of the hemispheres, and connect together adjacent?gyri.[2]?Some pass from one wall of the sulcus to the other.[2]

Long association fibers[edit]

The long association fibers connect the more widely separated gyri and are grouped into bundles.[2]?They include the following:

Diffusion tensor imaging?is a non-invasive method to study the course of association fibers.